Gol Gumbaz is a 17th-century mausoleum located in Bijapur, Karnataka. It houses the remains of Mohammad Adil Shah, seventh sultan of the Adil Shahi dynasty, and some of his relatives. Begun in the mid-17th century, the structure never reached completion. The Gol Gumbaz is one of the most technically advanced domed structures to have been erected, and one of the largest single-chamber structures in the world.